Hi, the OP this was crossposted from here. The answer is simple: I am using PeerTube Companion, a Firefox add-on that automatically redirects me to my home instance when loading any PeerTube video - so I can easily comment and like and subscribe. So when using the "share" button or copy-pasting the link from the address bar, I will default to posting a link to my instance - in essence, it is the same video, loaded from the same source, federation being what it is.